Removed final modifier to allow DateProperty to override copy() method
Removed final modifier to allow DateProperty to override copy() method

tschaible/ical4j,ical4j/ical4j,tschaible/ical4j,amannm/ical4j,voronaam/ical4j,ical4j/ical4j,amannm/ical4j,amannm/ical4j,ariordan/ical4j,ical4j/ical4j,ariordan/ical4j,voronaam/ical4j,voronaam/ical4j,ariordan/ical4j,tschaible/ical4j